You're right. The only case where Gparents have rights is if they can prove that not being in the child's life would be detrimental to the child. So, if they were raising said child and suddenly one of the parents wanted to come back in the picture and keep the Gparents away.

um... my case took place in Texas. Once I moved to West Virginia I talked to a Prosecution Attorney. She told me that Texas was the worst state that abused Grand parents rights. She told me good luck in getting my kids from my adoptive parents.